jim hamblen / Mbed 2 deprecated AppBoard_Waveplayer

A wave player demo setup for the mbed application board. Reads a wave file from a USB flash drive, and outputs to the onboard speaker (very low volume) and the analog audio out jack that can be connected to a set of PC speakers for more volume. A wave file for the demo is available at http://mbed.org/media/uploads/4180_1/sample.wav. Copy it to the USB drive. See http://mbed.org/users/4180_1/notebook/application-board-waveplayer-demo/ for more details and instructions.

Dependencies:   USBHost mbed wave_player_appbd

Fork of USBHostMSD_HelloWorld by Samuel Mokrani

main.cpp@0:0d68fe822228, 2013-03-06 (annotated)

Committer:
samux
Date:
Wed Mar 06 17:06:56 2013 +0000
Revision:
0:0d68fe822228
Child:
1:473f339c54c1
USBHostMSD Hello World

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 0:0d68fe822228 1 #include "mbed.h"
samux 0:0d68fe822228 2 #include "USBHostMSD.h"
samux 0:0d68fe822228 3
samux 0:0d68fe822228 4 DigitalOut led(LED1);
samux 0:0d68fe822228 5
samux 0:0d68fe822228 6 void msd_task(void const *) {
samux 0:0d68fe822228 7
samux 0:0d68fe822228 8 USBHostMSD msd("usb");
samux 0:0d68fe822228 9 int i = 0;
samux 0:0d68fe822228 10
samux 0:0d68fe822228 11 while(1) {
samux 0:0d68fe822228 12
samux 0:0d68fe822228 13 // try to connect a USB flash disk
samux 0:0d68fe822228 14 while(!msd.connect())
samux 0:0d68fe822228 15 Thread::wait(500);
samux 0:0d68fe822228 16
samux 0:0d68fe822228 17 FILE * fp = fopen("/usb/test.txt", "a");
samux 0:0d68fe822228 18
samux 0:0d68fe822228 19 if (fp != NULL) {
samux 0:0d68fe822228 20 fprintf(fp, "Hello fun SD Card World: %d!\r\n", i++);
samux 0:0d68fe822228 21 printf("Goodbye World!\r\n");
samux 0:0d68fe822228 22 fclose(fp);
samux 0:0d68fe822228 23 } else {
samux 0:0d68fe822228 24 printf("FILE == NULL\r\n");
samux 0:0d68fe822228 25 }
samux 0:0d68fe822228 26
samux 0:0d68fe822228 27 // wait until the msd disk is disconnected
samux 0:0d68fe822228 28 while(msd.connected())
samux 0:0d68fe822228 29 Thread::wait(500);
samux 0:0d68fe822228 30 }
samux 0:0d68fe822228 31 }
samux 0:0d68fe822228 32
samux 0:0d68fe822228 33
samux 0:0d68fe822228 34 int main() {
samux 0:0d68fe822228 35 Thread msdTask(msd_task, NULL, osPriorityNormal, (1024+512) * 4);
samux 0:0d68fe822228 36 while(1) {
samux 0:0d68fe822228 37 led=!led;
samux 0:0d68fe822228 38 Thread::wait(500);
samux 0:0d68fe822228 39 }
samux 0:0d68fe822228 40 }